A wheel initially has an angular velocity of 18 rad/s but it is slowing at a rat

Question

A wheel initially has an angular velocity of 18 rad/s but it is slowing at a rate of 3.0 rad/s . The time it takes to stop is: 3.0 s 6.0 s 9.0 s 12 s never stops A car travels north at constant velocity. It goes over a piece of mud which sticks to the tire. The initial acceleration of the mud, as it leaves the ground, is: THINK vertically upward horizontally to the north horizontally to the south zero upward and forward at 45 degree to the horizontal A disk with a rotational inertia of 5.0 kg -m2 and a radius of 0.25 m rotates on a frictionless fixed axis perpendicular to the disk and through its center. A force of 2.0 N is applied tangentially to the rim. The angular acceleration of the disk is: 0.10 rad/s2 0.4 rad/s2 1.0 rad/s2 2.5 rad/s2 10 rad/s2 The vessels shown below all contain water to the same height. Rank them according to the pressure exerted by the water on the vessel bottoms, least to greatest. 1, 2, 3, 4 3, 4, 2, 1 4, 3, 2, 1 2, 3, 4, 1 All pressures are the same

Explanation / Answer

21) The time taken is t=18/3=6 s

22) Horzontal to south

23) The angular acceleartion is alpha=2*0.25/5= 0.1 rad/s^2

24) All the pressures are the same

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